Unit 7 Crossword Puzzle

1234567891011121314151617181920
Across
  1. 3. The metallic center of Earth
  2. 5. The middle layer of Earth
  3. 7. Another word for thermal energy
  4. 8. Outer part of magnetic field that interacts with particles
  5. 10. Plate boundary formed where two plates separate
  6. 12. Plate boundary formed when two plates collide
  7. 14. Earth's entire solid body
  8. 16. The amount of mass in a material per unit volume
  9. 18. Frozen water on Earth
  10. 19. A cloud of gas, ice and dust that formed the solar system
  11. 20. The force that every object exerts on all other objects
Down
  1. 1. The outer layer of Earth
  2. 2. All living organisms on Earth
  3. 4. The layer of gases surrounding Earth
  4. 6. Solid outer section of Earth
  5. 9. Liquid water on Earth
  6. 11. The shape of Earth
  7. 13. push mantle material creates the potential for plates to move
  8. 15. Mass and ________ affect the strength of the gravitational force between objects
  9. 17. Plate boundary formed when two plates move past each other